Allow multiple selections in the file open dialog

Fix for bug #4315.

src/frontends/qt/FileDialog.cpp

@@ -133,21 +133,39 @@ FileDialog::Result FileDialog::save(QString const & path,
 
 FileDialog::Result FileDialog::open(QString const & path,
 	QStringList const & filters, QString const & suggested)
+{
+	FileDialog::Result result;
+	FileDialog::Results results = openMulti(path, filters, suggested, false);
+	result.first = results.first;
+	result.second = results.second.at(0);
+	return result;
+}
+
+
+FileDialog::Results FileDialog::openMulti(QString const & path,
+	QStringList const & filters, QString const & suggested, bool multi)
 {
 	LYXERR(Debug::GUI, "Select with path \"" << path
 			   << "\", mask \"" << filters.join(";;")
 			   << "\", suggested \"" << suggested << '"');
-	FileDialog::Result result;
-	result.first = FileDialog::Chosen;
+	FileDialog::Results results;
+	results.first = FileDialog::Chosen;
 
 	if (lyxrc.use_native_filedialog) {
 		QString const startsWith = makeAbsPath(suggested, path);
-		QString const file = QFileDialog::getOpenFileName(qApp->focusWidget(),
+		QStringList files;
+		if (multi)
+			files = QFileDialog::getOpenFileNames(qApp->focusWidget(),
 					title_, startsWith, filters.join(";;"));
-		if (file.isNull())
-			result.first = FileDialog::Later;
 		else
-			result.second = internalPath(file);
+			files << QFileDialog::getOpenFileName(qApp->focusWidget(),
+					title_, startsWith, filters.join(";;"));
+		if (files.isEmpty())
+			results.first = FileDialog::Later;
+		else {
+			for (const auto& file : files)
+				results.second << internalPath(file);
+		}
 	} else {
 		LyXFileDialog dlg(title_, path, filters, private_->b1, private_->b2);
 
@@ -158,12 +176,12 @@ FileDialog::Result FileDialog::open(QString const & path,
 		int res = dlg.exec();
 		LYXERR(Debug::GUI, "result " << res);
 		if (res == QDialog::Accepted)
-			result.second = internalPath(dlg.selectedFiles()[0]);
+			results.second << internalPath(dlg.selectedFiles()[0]);
 		else
-			result.first = FileDialog::Later;
+			results.first = FileDialog::Later;
 		dlg.hide();
 	}
-	return result;
+	return results;
 }
 
 

src/frontends/qt/FileDialog.h

@@ -41,6 +41,9 @@ public:
 	/// result return
 	typedef std::pair<FileDialog::ResultType, QString> Result;
 
+	/// result return
+	typedef std::pair<FileDialog::ResultType, QStringList> Results;
+
 	/**
 	 * Constructs a file dialog with title \param title.
 	 *
@@ -58,6 +61,9 @@ public:
 	/// Choose a file for opening, starting in directory \c path.
 	Result open(QString const & path, QStringList const & filters,
 			  QString const & suggested = QString());
+	/// Choose several files for opening, starting in directory \c path.
+	Results openMulti(QString const & path, QStringList const & filters,
+			  QString const & suggested = QString(), bool multi = true);
 
 	/// Choose a directory, starting in directory \c path.
 	Result opendir(QString const & path = QString(),

src/frontends/qt/GuiApplication.cpp

@@ -1858,7 +1858,7 @@ void GuiApplication::dispatch(FuncRequest const & cmd, DispatchResult & dr)
 			// We want the ui session to be saved per document and not per
 			// window number. The filename crc is a good enough identifier.
 			createView(support::checksum(fname));
-			current_view_->openDocument(fname, cmd.origin());
+			current_view_->openDocuments(fname, cmd.origin());
 			if (!current_view_->documentBufferView())
 				current_view_->close();
 			else if (cmd.origin() == FuncRequest::LYXSERVER) {
@@ -1867,7 +1867,7 @@ void GuiApplication::dispatch(FuncRequest const & cmd, DispatchResult & dr)
 				current_view_->showNormal();
 			}
 		} else {
-			current_view_->openDocument(fname, cmd.origin());
+			current_view_->openDocuments(fname, cmd.origin());
 			if (cmd.origin() == FuncRequest::LYXSERVER) {
 				current_view_->raise();
 				current_view_->activateWindow();

src/frontends/qt/GuiView.cpp

@@ -2792,7 +2792,7 @@ Buffer * GuiView::loadDocument(FileName const & filename, bool tolastfiles)
 }
 
 
-void GuiView::openDocument(string const & fname, int origin)
+void GuiView::openDocuments(string const & fname, int origin)
 {
 	string initpath = lyxrc.document_path;
 
@@ -2803,10 +2803,10 @@ void GuiView::openDocument(string const & fname, int origin)
 			initpath = trypath;
 	}
 
-	string filename;
+	QStringList files;
 
 	if (fname.empty()) {
-		FileDialog dlg(qt_("Select document to open"));
+		FileDialog dlg(qt_("Select documents to open"));
 		dlg.setButton1(qt_("D&ocuments"), toqstr(lyxrc.document_path));
 		dlg.setButton2(qt_("&Examples"), toqstr(lyxrc.example_path));
 
@@ -2815,21 +2815,25 @@ void GuiView::openDocument(string const & fname, int origin)
 				qt_("LyX Document Backups (*.lyx~)"),
 				qt_("All Files (*.*)")
 		});
-		FileDialog::Result result =
-			dlg.open(toqstr(initpath), filter);
+		FileDialog::Results results =
+			dlg.openMulti(toqstr(initpath), filter);
 
-		if (result.first == FileDialog::Later)
+		if (results.first == FileDialog::Later)
 			return;
 
-		filename = fromqstr(result.second);
+		files = results.second;
 
 		// check selected filename
-		if (filename.empty()) {
+		if (files.isEmpty()) {
 			message(_("Canceled."));
 			return;
 		}
 	} else
-		filename = fname;
+		files << toqstr(fname);
+
+	// iterate over all selected files
+	for (auto const & file : files) {
+		string filename = fromqstr(file);
 
 		// get absolute path of file and add ".lyx" to the filename if
 		// necessary.
@@ -2842,7 +2846,7 @@ void GuiView::openDocument(string const & fname, int origin)
 			Alert::warning(_("Invalid filename"),
 					bformat(_("The directory in the given path\n%1$s\ndoes not exist."),
 					from_utf8(fullname.absFileName())));
-		return;
+			continue;
 		}
 
 		// if the file doesn't exist and isn't already open (bug 6645),
@@ -2861,12 +2865,12 @@ void GuiView::openDocument(string const & fname, int origin)
 							_("Create &File"),
 							_("&Cancel"));
 				if (ret == 1)
-				return;
+					continue;
 			}
 			Buffer * const b = newFile(filename, string(), true);
 			if (b)
 				setBuffer(b);
-		return;
+			continue;
 		}
 
 		docstring const disp_fn = makeDisplayPath(filename);
@@ -2884,6 +2888,7 @@ void GuiView::openDocument(string const & fname, int origin)
 		}
 		message(str2);
 	}
+}
 
 // FIXME: clean that
 static bool import(GuiView * lv, FileName const & filename,

src/frontends/qt/GuiView.h

@@ -164,7 +164,7 @@ public:
 	/// closes the buffer
 	bool closeBuffer(Buffer & buf);
 	///
-	void openDocument(std::string const & filename, int origin);
+	void openDocuments(std::string const & filename, int origin);
 	///
 	void importDocument(std::string const &);